Ball point pen



FIG. 1 is a right front perspective view of a ball point pen showing our new design, with the writing tip in a retracted position;

FIG. 2 is a front elevational view with the writing tip in an extended position;

FIG. 3 is a right side elevational view of FIG. 2, the left side being a mirror image thereof;

FIG. 4 is a rear elevational view of FIG. 2;

FIG. 5 is a right front perspective view of FIG. 1 in an exploded condition;

FIG. 6 is a top plan view of FIG. 2; and

FIG. 7 is a bottom plan view of FIG. 2. 

The ornamental design for a ball point pen, as shown and described. 